Title : Silibinin sensitizes human glioma cells to TRAIL-mediated apoptosis via DR5 up-regulation and down-regulation of c-FLIP and survivin.

Pub. Date : 2007 Sep 1

PMID : 17804742






6 Functional Relationships(s)
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1 Silibinin sensitizes human glioma cells to TRAIL-mediated apoptosis via DR5 up-regulation and down-regulation of c-FLIP and survivin. Silybin TNF superfamily member 10 Homo sapiens
2 Here, we show that treatment with subtoxic doses of silibinin in combination with tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) induces rapid apoptosis in TRAIL-resistant glioma cells, but not in human astrocytes, suggesting that this combined treatment may offer an attractive strategy for safely treating gliomas. Silybin TNF superfamily member 10 Homo sapiens
3 Although the proteolytic processing of procaspase-3 by TRAIL was partially blocked in glioma cells, cotreatment with silibinin efficiently recovered TRAIL-induced caspase activation in these cells. Silybin TNF superfamily member 10 Homo sapiens
4 Silibinin treatment up-regulated DR5, a death receptor of TRAIL, in a transcription factor CHOP-dependent manner. Silybin TNF superfamily member 10 Homo sapiens
5 Taken together, our results show that the activity of silibinin to modulate multiple components in the death receptor-mediated apoptotic pathway is responsible for its ability to recover TRAIL sensitivity in TRAIL-resistant glioma cells. Silybin TNF superfamily member 10 Homo sapiens
6 Taken together, our results show that the activity of silibinin to modulate multiple components in the death receptor-mediated apoptotic pathway is responsible for its ability to recover TRAIL sensitivity in TRAIL-resistant glioma cells. Silybin TNF superfamily member 10 Homo sapiens